Black mould and streaming windows traced to the real cause, then fixed with ventilation and moisture control that lasts. Covering Didcot & Thame, Banbury and Oxford and across Oxfordshire.
Book a surveyCondensation is the most common cause of black mould in Oxfordshire homes, and it often gets mistaken for rising or penetrating damp. Bleach and mould-resistant paint only treat the symptom.
Our surveyors take humidity, temperature and surface readings to understand why moisture is building up in your property, then recommend changes that stop the mould returning.
Historic Oxfordshire properties were designed to breathe. When they are sealed with modern windows, gypsum plaster and vinyl paints, condensation and mould often follow.
We recommend ventilation solutions that suit older buildings.
Oxfordshire is full of historic buildings: Cotswold limestone cottages, ironstone houses around Banbury, timber-framed and thatched properties, and Georgian and Victorian townhouses in Oxford, Henley and Abingdon. Many are listed or in conservation areas, built with lime mortars and solid stone walls that need breathable, sympathetic treatments rather than impermeable modern materials.
Thatched roofs, timber frames and solid stone walls are vulnerable wherever rainwater goods fail or ground levels rise against walls, and old timber floors and beams are often affected by woodworm and rot.
Newer housing and period town centres, where condensation in modern homes and rising damp in older ones are common.
Ironstone houses alongside interwar and post-war housing, where damp in solid stone walls and wall tie corrosion feature.
Georgian and Victorian townhouses, college buildings and riverside homes, many listed, in a city with a long history of flooding from the Thames and Cherwell.
Every home produces moisture from cooking, showering, drying clothes and simply breathing. When warm, moist air meets a cold surface such as a window, an external corner or an uninsulated wall, it condenses. Where ventilation can't remove that moisture fast enough, black mould follows.
Solutions depend on the property. They may include positive input ventilation (PIV) units that gently replace moist air with filtered fresh air, continuous-running extractor fans in kitchens and bathrooms, humidity-controlled fans, improved trickle ventilation, or insulating cold spots. We also check for hidden leaks and penetrating damp that can make condensation worse.
For landlords and managing agents, our written report gives a clear, independent assessment of the cause, which is invaluable where responsibility is disputed.
A PCA-qualified, commission-free surveyor visits your Oxfordshire property, investigates with calibrated equipment and identifies the cause.
You receive a clear written report explaining what we found and what we recommend, with a fixed quotation and no hidden extras.
Our own trained team carries out the work, protecting your home, keeping dust down and leaving everything clean.
You receive a written guarantee, which can be protected by an Insurance Backed Guarantee for a single premium.
We survey properties across Oxfordshire, with Henley, Abingdon, Wallingford and Oxford among the areas we visit most. We regularly work in Oxford, Henley-on-Thames, Thame, Faringdon, Witney and Bicester, and throughout Oxford, South Oxfordshire, Vale of White Horse, West Oxfordshire and Cherwell.
Towns and areas we cover in Oxfordshire
Find out more about our condensation & mould control service.
Book a survey
If you’ve noticed any of these issues, arranging a professional survey is the best way to identify the cause and prevent further damage.
In winter, windows are closed, heating cycles on and off and walls are colder, so moisture has fewer ways out and more cold surfaces to condense on. Improving ventilation is usually the long-term fix.
It can help in a single room but rarely fixes the cause on its own. A whole-house approach to ventilation and cold spots is more effective and cheaper to run long term.
It depends on the cause. Lifestyle plays a part, but the building's ventilation, insulation and condition are often the main factors. Our independent report helps landlords and tenants in Oxfordshire understand what is causing the problem.
Persistent mould and damp can affect indoor air quality and may aggravate allergies, asthma and other respiratory conditions in some people, so it is worth tackling promptly.
Yes. Much of our Oxfordshire work is on listed limestone, ironstone and timber-framed buildings. We use breathable, lime-compatible materials and fix causes such as raised ground levels and failed rainwater goods before considering anything invasive.
We visit Henley, Abingdon, Wallingford and Oxford most often, and cover the rest of the county on request. Call us to check your area.
We survey properties across Oxfordshire, with Henley, Abingdon, Wallingford and Oxford among the areas we visit most. Towns we visit regularly include Oxford, Henley-on-Thames, Thame, Faringdon, Witney, Bicester, Burford and Carterton. If yours isn't listed, give us a call and we'll confirm.
Also in Oxfordshire
Our other specialist services for Oxfordshire homes, landlords and businesses.
Rising damp, penetrating damp and damp proof courses. Most common around Oxford and Henley-on-Thames.
Dry rot, wet rot and woodworm. Most common around the Cotswold villages and Oxford.
Basement damp proofing, tanking and conversions. Most common around Oxford and Henley-on-Thames.
Pre-purchase and mortgage surveys. Especially worthwhile for older homes around the Cotswold villages and Oxford.
Wall tie replacement and crack stitching. Most common around Banbury and Didcot & Thame.
Leaks, floods and burst pipes. Most common around Oxford and Henley-on-Thames.
Client testimonials
I would like to thank Tapco for the work they carried out recently on my flat in Kingston. Both me and my partner are very happy with the service we received and the quality of their work. I wouldn't hesitate using them again.
Live just outside Oxfordshire? We cover the neighbouring counties too.
Find the right service / 1 minute
Tell us what you’re seeing and we’ll point you to the right treatment. Four quick questions.
From our offices in Thames Ditton and Esher, our surveyors cover London and the surrounding counties, providing fast response times for residential and commercial properties alike.
We regularly work with:
Whether your property requires a damp survey, timber inspection or basement waterproofing system, our experienced team is ready to help.
Our certifications reflect our commitment to the highest standards of work and quality.
Why Tapco
Established in 1971
Choosing Tapco HomeDry means choosing a company with a proven history of protecting properties across the South East.
We believe every property deserves an individual assessment. That’s why our recommendations are based on what your building genuinely needs, not unnecessary treatments.
Tapco (Preservation) Ltd is an Introducer Appointed Representative (Financial Services Register No. 423558) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.
